Yasushi's system had just been published in the Japanese edition of Scientific American. David Koski was exploring phi-scalable T-modules and other tetrahedral derivatives of the golden cuboid (had some excellent assemblies of well-known polyhedra -- great puzzles I thought). And Einar Thorstein was a 3rd, more geographically remote pioneer of a 5-fold symmetric building block system that we were talking about.

Now Einar has some more to say on the subject, and offered to send me a CD. Looking forward to it. Good to see us getting together again, and this thread re-awakening.

Followup Nov 5, 2004:

Got Einar's CD about FANG from Berlin -- a set of PDFs with lots of pictures, high production values, lots of new shop talk and abbreviations. David Koski has a new blog. All good.